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MATLAB

MATLAB. Prvi koraki. Določene operacije. A = [12, 5; 3, 11] min(A) max (A) sum(A) diag (A). "Rezanje" matrik. Element A(2,3) Podmatrika A(2:4, 1:3) Vrstica A(2,:) Stolpec A(:,4). Komentiranje. % začne komentar matI = eye (5) % matI je identična matrika velikosti 5. Naloga.

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MATLAB

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  1. MATLAB Prvi koraki

  2. Določene operacije • A = [12, 5; 3, 11] • min(A) • max(A) • sum(A) • diag(A)

  3. "Rezanje" matrik • Element • A(2,3) • Podmatrika • A(2:4, 1:3) • Vrstica • A(2,:) • Stolpec • A(:,4)

  4. Komentiranje • % začne komentar • matI = eye(5) % matI je identična matrika velikosti 5

  5. Naloga • Sestavi magični kvadrat velikosti 5 x 5 in preveri, če je vse OK (diagonali, stolpci in vrstice seštejejo v isto vsoto) • helpmagic • magKv = magic(5) • Hura – le še kontrole • sum(magKv) • Vsote po stolpcih • Kaj pa po vrsticah? • Sum(magKv') • Preverimo glavno diagonalo • sum(diag(magKv)) • Kaj pa obratna? • Pomoč … • rot90 • sum(diag(rot90(magKv)))

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